Continental CrossContact ATR 255/70 R17

Continental CrossContact ATR is a winter tyre made in total of 68 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 255/70 R17 is 50mm wider than the narrowest dimension (205) and 20mm narrower than the widest one (275). This tyre profile of 70 means the sidewall height of the tyre is 70% of the tyre width (255mm), which results in 178.5mm sidewall height.